Heat Stress (WBGT and Heat Index)
Heat index, WBGT estimate, and OSHA-style work / rest cycle.
Example
You enter
- Dry-bulb temp (°F) 95
- Relative humidity (%) 60
- Direct sun exposure false
You get
- Heat index 113.1 F
Details, formula, and sources
NWS Heat Index = polynomial of T_db (°F) and RH (%) (Steadman regression); WBGT estimate from public OSHA heat-illness work-rest table; OSHA-style work / rest cycle by exertion.
NWS Heat Index polynomial by name; OSHA Heat Illness Prevention work-rest table by name.
Free at weather.gov/safety/heat-index and osha.gov/heat-exposure.
Estimate. AHJ and licensed professional govern.
Field names used by the API: T_F, RH_percent, solar, heat_index_F
- Default acclimatization user-supplied (acclimatized vs. unacclimatized worker)OSHA Heat Illness Prevention